[attachment=3808]First, I'm not into bikes much just use mine for transportation.
Recently I broke a spoke on my rear wheel and of course it's behind the freewheel/cluster/cog. I saw a good vid on youtube on replacement and tuning so I'm going to tackle it. BUT I don't know what tool I need to remove the freewheel. Attached is a picture of it.

If the broken spoke is on the drive side, you need to remove the freewheel (and FR1 is the right tool). You'll also need a good sized adjustable wrench to turn the freewheel tool of course. You do have a freewheel and not a cassette.

If the spoke is on the left side, you "can" replace it without removing the freewheel, but you have to bend the new spoke pretty substantially to get it in and it's not "recommended". Note that you usually have to bend a spoke a little to put it in regardless. This is fine as long as you make long smooth bends and avoid any kinks.

While you have it off, might as well repack the wheel bearings with grease and flush some clean oil into the freewheel if you've got the time.